478313879 has 2 divisors, whose sum is σ = 478313880. Its totient is φ = 478313878.

The previous prime is 478313839. The next prime is 478313929. The reversal of 478313879 is 978313874.

It is an a-pointer prime, because the next prime (478313929) can be obtained adding 478313879 to its sum of digits (50).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 478313879 - 2²⁰ = 477265303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (478313839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 239156939 + 239156940.

It is an arithmetic number, because the mean of its divisors is an integer number (239156940).

Almost surely, 2^478313879 is an apocalyptic number.

478313879 is a deficient number, since it is larger than the sum of its proper divisors (1).

478313879 is an equidigital number, since it uses as much as digits as its factorization.

478313879 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 50.

The square root of 478313879 is about 21870.3881767105. The cubic root of 478313879 is about 782.0556553425.

The spelling of 478313879 in words is "four hundred seventy-eight million, three hundred thirteen thousand, eight hundred seventy-nine".